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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Hi Kevin,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Look at the man page for mmchnode, you’ll need to use the “--cnfs-interface=<ip_address_list>” option.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">BTW, I get the cleanest looking man pages for GPFS commands by using the “-E ascii” option.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">You may also have a Round-Robin DNS record setup that includes the current IP addresses that you will likely want to update, not forgetting about DNS caching
timeouts that you may need to let expire before no client attempts to mount from an old address.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Hope that helps!<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">-Bryan<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> gpfsug-discuss-bounces@spectrumscale.org [mailto:gpfsug-discuss-bounces@spectrumscale.org]
<b>On Behalf Of </b>Buterbaugh, Kevin L<br>
<b>Sent:</b> Tuesday, May 03, 2016 3:20 PM<br>
<b>To:</b> gpfsug main discussion list <gpfsug-discuss@spectrumscale.org><br>
<b>Subject:</b> [gpfsug-discuss] CNFS and multiple IP addresses<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Hi All, <o:p></o:p></p>
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<p class="MsoNormal">I’ve looked in the documentation and on the GPFS Wiki for the answer to this question but haven’t found it. Please feel free to point me to docs / web pages if I’ve missed something.<o:p></o:p></p>
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<p class="MsoNormal">One of the GPFS clusters I administer uses CNFS, which I did not set up on this cluster … and the person who did is now an employee of another organization. The cluster in question runs GPFS 4.1.0.x, although I doubt that matters.<o:p></o:p></p>
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<p class="MsoNormal">There are 4 CNFS servers, each of which has 2 IP addresses listed under the CNFS IP address list when running “mmlscluster —cnfs”. I want to delete one of those two IP addresses for each server due to a planned network reorganization.
How do I do that? Or do I need to completely delete the server from CNFS and add it back in with just the one IP address I want to keep?<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Thanks in advance…<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">—<o:p></o:p></p>
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<p class="MsoNormal">Kevin Buterbaugh - Senior System Administrator<o:p></o:p></p>
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<p class="MsoNormal">Vanderbilt University - Advanced Computing Center for Research and Education<o:p></o:p></p>
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<p class="MsoNormal"><a href="mailto:Kevin.Buterbaugh@vanderbilt.edu">Kevin.Buterbaugh@vanderbilt.edu</a> - (615)875-9633<o:p></o:p></p>
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